bsd_signal man page on ElementaryOS

Man page or keyword search:  
man Server   4994 pages
apropos Keyword Search (all sections)
Output format
ElementaryOS logo
[printable version]

BSD_SIGNAL(3)		   Linux Programmer's Manual		 BSD_SIGNAL(3)

NAME
       bsd_signal - signal handling with BSD semantics

SYNOPSIS
       #define _XOPEN_SOURCE	   /* See feature_test_macros(7) */
       #include <signal.h>

       typedef void (*sighandler_t)(int);

       sighandler_t bsd_signal(int signum, sighandler_t handler);

DESCRIPTION
       The  bsd_signal()  function  takes the same arguments, and performs the
       same task, as signal(2).

       The difference between the two is that bsd_signal()  is	guaranteed  to
       provide	reliable  signal semantics, that is: a) the disposition of the
       signal is not reset to the default when	the  handler  is  invoked;  b)
       delivery of further instances of the signal is blocked while the signal
       handler is executing; and c) if the handler interrupts a blocking  sys‐
       tem  call, then the system call is automatically restarted.  A portable
       application cannot rely on signal(2) to provide these guarantees.

RETURN VALUE
       The bsd_signal() function returns the previous value of the signal han‐
       dler, or SIG_ERR on error.

ERRORS
       As for signal(2).

CONFORMING TO
       4.2BSD,	 POSIX.1-2001.	 POSIX.1-2008  removes	the  specification  of
       bsd_signal(), recommending the use of sigaction(2) instead.

NOTES
       Use of bsd_signal() should be avoided; use sigaction(2) instead.

       On modern Linux systems, bsd_signal()  and  signal(2)  are  equivalent.
       But  on	older systems, signal(2) provided unreliable signal semantics;
       see signal(2) for details.

       The use of sighandler_t is a GNU extension; this type is	 defined  only
       if the _GNU_SOURCE feature test macro is defined.

SEE ALSO
       sigaction(2), signal(2), sysv_signal(3), signal(7)

COLOPHON
       This  page  is  part of release 3.54 of the Linux man-pages project.  A
       description of the project, and information about reporting  bugs,  can
       be found at http://www.kernel.org/doc/man-pages/.

				  2009-03-15			 BSD_SIGNAL(3)
[top]

List of man pages available for ElementaryOS

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
...................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net